Apparatus for stretching woven-wire fabrics upon mattress-frames



(No Model.)

H. ROBERTS.

APPARATUS FOR STRETGHING WOVEN WIRE FABRICS UPON MATTRESS FRAMES.

No 274,14Z. Patented Mar.20,1883.

N. FUCHS. PholvLiihogmpher. Wmhinglom D C.

UNITED STATES PATENT OFFICE.

HENRY ROBERTS, OF HARTFORD, CONNECTICUT.

APPARATUS FORASTRETCHING WOVEN-WlRE FABRICS UPON MATTRESS-FRAMES.

SPECIFICATION forming part of Letters Patent No. 274,142, dated March 201883.

Applicationfiled January 16, 1883. (No model.)

To all whom it may concern:

Be it known that I, HENRY ROBERTS, of Hartford, in the county ofHartford, and in the State of Connecticut, have invented a new anduseful Apparatus for Stretching Woven-Wire Fabrics upon Mattress-Frames;and I do hereby declare that the following specification and theaccompanying drawings referred to therein properly set that inventionforth.

Figure 1 represents my stretching apparatus separate from every otherthing. Fig. 2 is a side view of one end of one side of a mattress-framehaving my stretching apparatus applied thereto. Fig. 3 is a top view ofone corner of a mattressframe with my stretching apparatus applied tosuch frame.

A is a casting, which has a recess, 7), for receiving one end of a sidepiece,c, of a mattress-frame.

D isa set-screw, which passes through a threaded hole in the bottom wallof that recess. i a

E is a bolt, which has apolvgonal head, and which has a nut, F,thieadedupon its smaller end, and which passes through around onthreaded hole inthe top part of the casting, and which, when the stretching apparatus isused, passes also through a similar hole in an end piece, g, of amattress-frame, and which end piece has a corner-piece, h, rigidlyfastened to each of its ends by means of the screwsjj, and each of whichcorner-pieces has screw-holes k k, by means of which to fasten nentlyfastened to one side of one end of a side piece of such ai frame, andthe other end of the same end piece being permanently fastened toanother corner-piece, which is permanently fastened to one side of oneend of the other side piece of such a frame, and the other of. those endpieces having permanently fastened to each of its ends a corner-piece ofsuch a frame, and the latter end piece being placed as near as may be toits ultimate position over the unoccupied ends of the side pieces ofthat frame, the frame is ready for my apparatus. By means of theset-screw l), I temporarily but rigidly attach a specimen of mystretching apparatus to the unoccupied end of each of the upon theirrespective bolts, and by means of wrenches I screw them up the bolts,and thereby force the end piece of the mattressframe home to itsultimate position over the ends of the side pieces, and stretching, as Ido so, the wire fabric to a great tension. I then fasten the twoadjacent corner-pieces to their adjacent side pieces by means of screwspassing through the screw holes is k, and thus permanently assemble allparts of the woven-wire mattress with such a great degree of tension inthe woven-wire fabric as makes the whole permanently useful for a bed.I. then remove both stretching apparatuses from the mattress-frame, andafterward use it as often as necessary for performing similar operationson other similar woven-wire mattresses.

My stretching apparatus may be somewhat modified Without changing itsessence or its utility. The nut F may be dispensed with, and the threadof the bolt be made to work in a corresponding thread in the hole in theend piece, g. So, also, the bolt E may be reversed, and may be made towork in a not on the outside of the casting A, or in a thread cut in thehole in that casting, through which that bolt passes.

I claim as my invention The combination, in an apparatus for stretchingwoven-wire fabrics upon mattress-frames, of the casting A, the set-screwD, and the bolt E, substantially as described.

HENRY ROBERTS;

Witnesses:

ALBERT H. WALKER, FRANK E. Hrnn.

